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realgar

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noun re·al·gar \rē-ˈal-ˌgär, -gər\

Definition of realgar

  1. :  an orange-red mineral consisting of arsenic sulfide and having a resinous luster



Origin and Etymology of realgar

Middle English, from Medieval Latin, from Catalan, from Arabic rahj al-ghār powder of the mine


First Known Use: 15th century


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